22444111146421 has 2 divisors, whose sum is σ = 22444111146422. Its totient is φ = 22444111146420.

The previous prime is 22444111146371. The next prime is 22444111146449. The reversal of 22444111146421 is 12464111144422.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18298973952900 + 4145137193521 = 4277730^2 + 2035961^2 .

It is a cyclic number.

It is not a de Polignac number, because 22444111146421 - 2³⁹ = 21894355332533 is a prime.

It is a super-2 number, since 2×22444111146421² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22444111146481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11222055573210 + 11222055573211.

It is an arithmetic number, because the mean of its divisors is an integer number (11222055573211).

Almost surely, 2^{22444111146421} is an apocalyptic number.

It is an amenable number.

22444111146421 is a deficient number, since it is larger than the sum of its proper divisors (1).

22444111146421 is an equidigital number, since it uses as much as digits as its factorization.

22444111146421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 49152, while the sum is 37.

The spelling of 22444111146421 in words is "twenty-two trillion, four hundred forty-four billion, one hundred eleven million, one hundred forty-six thousand, four hundred twenty-one".